220210506121 has 2 divisors, whose sum is σ = 220210506122. Its totient is φ = 220210506120.

The previous prime is 220210506071. The next prime is 220210506143. The reversal of 220210506121 is 121605012022.

It is an a-pointer prime, because the next prime (220210506143) can be obtained adding 220210506121 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160740855625 + 59469650496 = 400925^2 + 243864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220210506121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220210506092 and 220210506101.

It is not a weakly prime, because it can be changed into another prime (220210506421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110105253060 + 110105253061.

It is an arithmetic number, because the mean of its divisors is an integer number (110105253061).

Almost surely, 2^220210506121 is an apocalyptic number.

It is an amenable number.

220210506121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220210506121 is an equidigital number, since it uses as much as digits as its factorization.

220210506121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 220210506121 its reverse (121605012022), we get a palindrome (341815518143).

The spelling of 220210506121 in words is "two hundred twenty billion, two hundred ten million, five hundred six thousand, one hundred twenty-one".